Wow. "One crazy idea that the team had at that dinner was to translate Android's source code to C#. Android would benefit from C# performance features like structures, P/Invoke, real generics and our more mature runtime. [...] We decided it was crazy enough to try. So we started a small skunkworks project with the goal of doing a machine translation of Android from Java to C#. We called this project XobotOS." Most of Android's layouts and controls are now in C#. The small benchmark is stunning, but as much as I admire the work, I'm wondering that this like going from bad to worse - from Oracle's Java to Microsoft's C#.

I agree. Plus Google could argue that M$ (yes, I did that on purpose!) is already extracting royalties from Android (by proxy, from the cellphone manufacturers), so Google don't have to pay them - again - for just using C#.